Idk.
A first generation i3 as compared to a second (or third, I'm not exactly sure which) generation pentium is tough call to me.
While the i3 has HT, yes, the pentium has the updated, smaller architecture that allows for better integrated graphics and quicker processing. I would actually see the pentium outperforming the i3 in this case.
Well What it is is I'm looking for a 17" laptop and I have a close shave budget. And it's a third gen Pentium. I'm ordering it Monday. I've decided to go with the Lenovo G780